darling-JavaScriptCore/runtime/CacheUpdate.h
2020-08-29 15:28:47 -04:00

64 lines
2.1 KiB
C++

/*
* Copyright (C) 2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "CachePayload.h"
#include "CachedTypes.h"
#include "CodeSpecializationKind.h"
#include <wtf/Variant.h>
namespace JSC {
class CacheUpdate {
public:
struct GlobalUpdate {
CachePayload m_payload;
};
struct FunctionUpdate {
ptrdiff_t m_base;
CodeSpecializationKind m_kind;
CachedFunctionExecutableMetadata m_metadata;
CachePayload m_payload;
};
CacheUpdate(GlobalUpdate&&);
CacheUpdate(FunctionUpdate&&);
CacheUpdate(CacheUpdate&&);
CacheUpdate& operator=(CacheUpdate&&);
bool isGlobal() const;
const GlobalUpdate& asGlobal() const;
const FunctionUpdate& asFunction() const;
private:
Variant<GlobalUpdate, FunctionUpdate> m_update;
};
} // namespace JSC